Which HP12 to buy?

[Siriuslux]

Hello everybody,
In the meantime I found a US model that apparently is not at all used and a Brazilian one that is unused as well. Both are built in the 1980s, one comes with box and German manual. I‘ll have to wait for a couple of days for them to arrive.
On top of that I found a silver HP17BII+ that I probably will get handed over next Sunday.
So let’s see where this takes me.
BTW: The HP95 and 200 are impressive but not what I am looking for, too big.
The HP19B with its foldable design is certainly nice but several decades back my brother got the same thing as engineering calculator and it never appealed to me. I instead continued with the 41CX and eventually the 48S, both during my engineering studies.
Some 8 to 10 years ago I figured an additional 48G was really cheap to get, so I bought one that was almost new.